Puddlejumpers

As a last reprieve before being sent to a juvenile detention facility, Ernie Banks is allowed to spend three weeks on a working farm. When Ernie arrives at the home of Russ Frazier, he learns that the widower's baby was kidnapped years before. Determined to solve the case, Ernie joins a local tomboy on a journey into the cavernous underground kingdom of the Puddlejumpers; eleven-inch-tall water creatures with whom Ernie has a mysterious connection.